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Karlson coupler kount 2012 (including K-tube)

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Posted on June 6, 2012 at 08:09:09
freddyi
Audiophile

Posts: 2782
Joined: December 6, 2001
who's "in" this year?
Karlson Evangelist

 

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RE: Karlson coupler kount 2012 (including K-tube), posted on June 6, 2012 at 14:57:24
tomservo
Manufacturer

Posts: 6666
Joined: July 4, 2002
Last time i was at the shop in Hotlanta, Ivan had gotten one of those tube thingy's. I don't recall who made it but it was an official one (factory made).
If he see's this, maybe he will post a photo.

Hey, if you still have my e-mail, contact me when you have a moment.
Best,
Tom

 

RE: Karlson coupler kount 2012 (including K-tube), posted on June 6, 2012 at 17:39:01
freddyi
Audiophile

Posts: 2782
Joined: December 6, 2001
hi Tom - I've got plenty of time but lost your address - hope you're having fun this summer -- Best, Freddy
Karlson Evangelist

 

RE: Karlson coupler kount 2012 (including K-tube), posted on June 6, 2012 at 18:42:23
Alpha Al
Industry Professional

Posts: 1988
Location: N. Carolina
Joined: February 16, 2004
Contributor
  Since:
December 0, 0000
Hi Tom:

Those were marketed by Transylvania Audio. A small K-coupler that bolted directly on a 1" driver. They actually did what they were supposed to, gave a very even horizontal dispersion at all frequencies.

Not as efficient as a horn, though.

I don't know whatever became of that company or who ran it.

 

RE: Karlson coupler kount 2012 (including K-tube), posted on June 7, 2012 at 05:31:43
IG
Audiophile

Posts: 130
Location: Québec
Joined: August 31, 2011
In a an effort to thin the herd, I'm only gonna be keeping the little SK8 and my pair of K-Tubes.

The K-Tube is very nice indeed. As noted, there is no real gain like a horn and I see it more as a waveguide of sorts. Sounds uncolored and actually measures well (that's a big plus for a Karlson-thing! :) ) If what Dr. Geddes says about a good WG, that their impedance plot should only be two peaks and that anymore means unwanted resonances, holds water when looking at such a device, then the K-Tube is looking pretty good.

I've had a small conical wood horn at 3kHz and a mini-Smith horn also around 3kHz, playing on top of Fostex FF225WK in this little SK8, both with good integration. The Smith did somewhat better though. The K-Tube blended even better on the larger K12; next step will be to try it on the SK8.

IG

 

RE: Karlson coupler kount 2012 (including K-tube), posted on June 7, 2012 at 16:44:27
Ivan Beaver
Manufacturer

Posts: 232
Location: Atlanta GA
Joined: September 1, 2007
That's the one I have.

If I ever get some time-I want to do some measurements

 

RE: Karlson coupler kount 2012 (including K-tube), posted on June 8, 2012 at 05:46:55
weltersys
Industry Professional

Posts: 647
Location: NM
Joined: September 28, 2004
"Those were marketed by Transylvania Audio. A small K-coupler that bolted directly on a 1" driver."

The Transylvania Tubes were also made for 2" drivers.
The only pair I heard (in 1978) used JBL 2440s, the dispersion was so wide the Shure SM 58 vocal mics were on the verge of 6000 Hz feedback through the performance.

I may use the 8" Jensen speakers from the pair of Karlsons my dad built around 1960 in a pair of Synergy horns later this summer, the Karlsons will then become a pair of sculptural bird houses.

Don't know if that will add or subtract to the 2012 Karlson Kount :^).

Art

 

I have a pair of Karlsons from the late 1950s, posted on June 9, 2012 at 05:32:22
Kloss
Manufacturer

Posts: 1201
Location: WI
Joined: January 25, 2012
I should restore them sometime this year.

 

3-way K Tube speaker planned for later this summer..., posted on June 9, 2012 at 11:45:52
Bill F.
Audiophile

Posts: 70
Location: SW MI
Joined: October 18, 2001
Here's a link to my thread on DIYAudio.

 

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